正負控制 的英文怎麼說

中文拼音 [zhēngkòngzhì]
正負控制 英文
positive-negative control
  • : 正名詞(正月) the first month of the lunar year; the first moon
  • : Ⅰ名詞1 (負擔) burden; load 2 (虧損) loss 3 (失敗) defeat Ⅱ動詞1 [書面語] (背) carry on th...
  • : 動詞1 (告發;控告) accuse; charge 2 (控制) control; dominate 3 (使容器口兒朝下 讓裏面的液體慢...
  • : Ⅰ動詞1 (製造) make; manufacture 2 (擬訂; 規定) draw up; establish 3 (用強力約束; 限定; 管束...
  • 控制 : control; dominate; regulate; govern; manage; check; cybernate; manipulate; encraty; rule; rein; c...
  1. Then following reality constituent of engine and connecting component interface, a nonlinear signal cylinder engine model has been created, though fire interval and fire order, a control - oriented four cylinders engine is build. following dynamometer is seen as load, performance of engine is simulated and researched under the condition of constant torque and speed, validation of the math and simulation model have been confirmed by comparison result between simulation with test result of engine performance simulation software dyno

    按照發動機的實際組成,根據各部件的介面類型連接模型庫中的部件,建立了單缸發動機非線性模型,在此基礎上,依據發動機實際發火間隔和順序,建立了面向的四缸汽油機模型,並以測功器為載,通過恆轉矩和恆轉速方式進行了發動機性能模擬和研究,模擬結果和發動機動力性能模擬軟體dyno測試結果的對比驗證了數學模型和模擬模型的確性。
  2. M ( 4 ) do a deep research on the privilege management of the engineering database system co - s _ dbs, and aimed at the requirements of the cooperative design for the privilege management, purpose a privilege management model s _ pmm. this model can not only provide the well - designed structure of the privilege control table and the paniculate privilege control, but also support role mechanism, positive and negative privilege mechanism, concealed privilege mechanism, which well satisfies the requirements of the cooperative design

    ( 4 )對co - s _ dbs工程數據庫系統的權限管理進行了深入的研究,針對協同設計對權限管理的要求設計了權限管理模型s _ pmm ,該模型提供了設計良好的權限製表結構,細粒度的權限,支持角色機權限機、隱式權限機,很好的滿足了協同設計的要求。
  3. The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation

    二、在高頻變壓器原邊,當開關管接收信號脈沖列(經調的spwm波列)導通時,在低頻調信號的半周或半周內,施加在變壓器繞組上的是同一方向的電壓,變壓器磁芯中的磁通可能將級進地逐漸增加,導致磁芯飽和,造成磁偏或單向磁化,導致低頻電信號放大失真或由於很大的磁化電流而無法常工作。
  4. Procreant knowledge expression and forward inference engine are adopted in the method of fault diagnosis based on expert system theory. in the fault diagnosis applying neural network theory, six kinds of improved arithmetic of back - propagation arithmetic, including gradient descent with momentum, variable learning rate back - propagation, resilient back - propagation, quasi - newton, levenberg - marquardt and conjugate gradient, are applied to diagnose the faults of electric load manage center and solid state power controller. different diagnostic results gotten by simulation are compared at last

    在基於專家系統的故障診斷方法中,採用了產生式知識表達和向推理機;在基於神經網路的故障診斷方法中,則分別採用了bp神經網路的附加動量法、自適應學習速率、彈性bp演算法、擬牛頓法、共軛梯度法和levenberg - marquardt法對電氣載管理中心和固態功率器的故障進行診斷,並對由模擬得到的不同診斷結果進行比較。
  5. 2 ) linking the classical control theory with practice, it tries drawing a sententious and practical conclusion by optimization. correctness is proved by emulation with robust toolbox of matlab. 3 ) in view of the complicacy of the circuits, it optimizes reactive compensation by equivalent area theorem and programs by c. it has been used in practice and gets good benefit

    2 )結合多年工作經驗和一些經典理論對幾種典型荷網路的補償容量、補償位置進行優化,尋求比較實用、可行的結論,並對其進行基於matlab的模擬,證明其確性、可行性,使其具有更廣的應用性。
  6. Ttl high, low, positive or negative, switch closure or software

    Ttl高,低,,開關或軟體
  7. The # 9 and # 10 142mw heat supply units in gansu xigu power plant, the steam extraction main pipe system adopt westation control system of westing house company and deb coordination control policy in design. the coordination control policy successfully expand the whole the running range, from the normal running condition to abnormity running condition and start or stop condition, which simplicity base on burthen and main steam pressure coordination control

    甘肅西固熱電廠# 9 、 # 10142mw抽汽母管供熱機組,選用美國西屋公司westation系統,設計、應用了deb協調策略,從單純作為荷和主蒸汽壓力協調的基本功能,成功擴展到整個運行范圍,即從常運行工況到異常運行工況及啟、停工況。
  8. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發,提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲,在調系數0 . 1 m 0 . 5情況下,移相角按弦規律變化,使諧振電壓脈沖列的幅值追蹤參考弦電壓信號,經過整流、濾波、低頻逆變,從而獲得弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性載或阻感性載,移相全橋具有超前橋臂零電壓開通,滯后橋臂或者零電壓開通( _ 0 )或者零電流關斷( _ 0 )的軟開關特性,而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。
  9. Finally, we can not use electric power but the engine of bus or subsidiary engine to drive air compressors of bus air conditions. because the change range of turnaround speed of engine is very wide, that brings difficulties in controlling the rate of flow of cold - producing medium. in the control of bus air - conditions, preventing evaporator from freezing to make the air - conditions work with high efficiency and controlling the temperature of railway carriage are the basic tasks in air - condition control

    與一般的建築空調相比,汽車空調的工作環境惡劣,條件差,難度要增加很多,主要體現在以下幾個方面:一是車外熱荷變化大,難以確定參數;二是要求空調荷大,而且要空調使其降溫迅速:三,不便於用電力作為動力源,必須用汽車發動機或輔助發動機來帶動壓縮機,當採用汽車發動機作為動力源時,由於汽車的車速變化大,發動機轉速的變化可從600r min到4000r min ,壓縮機轉速與發動機轉速成比,其轉速變化高達7倍,給空調系統製冷劑流量帶來困難。
  10. Neither the bank, its associates, nor any of their directors, officers or employees, shall be liable to the customer for any expenses, loss or damage suffered by or occasioned to the customer by reason of any action taken or omitted to be taken by any one or all of the bank, its associates, their directors, officers, employees or agents pursuant to these conditions or in connection therewith other than as a result of the fraud, wilful default or negligence of the bank, its associates, their directors, officers, employees or agents ; the bank s failure in good faith to honour any stop - payment instructions given by the customer ; the presentation to the bank of any cheque or other payment order which is post - dated ; the bank failing to honour any draft drawn on it by the customer, but the bank shall immediately return such draft to the customer through the normal channels giving the reason for the dishonour ; any loss, damage, destruction or misdelivery of or to the securities howsoever caused unless the same shall result from the negligence of, or theft by, the bank or its associates or any of their directors, officers or employees, in which event the extent of the liability of the bank shall be limited to the market value of such securities at the date of discovery of the loss and even if the bank has been advised of the possibility of such loss or damage ; unauthorised use or forging of any authorised signature as a result of the negligence, wilful default or fraud of the customer ; subject to condition 5. 5, any act or omission, or insolvency of, any person not associated with the bank including, without limitation, a third party nominee or depositary ; viii the collection or deposit or crediting to the custodian accounts of invalid, fraudulent or forged securities or any entry in the custodian accounts which may be made in connection therewith ; any malfunction of, or error in the transmission of information caused by, any electrical or mechanical machine or system or any interception of communication facilities, abnormal operating conditions, labour difficulties, acts of god, or any similar or dissimilar causes beyond the reasonable control of the bank and notwithstanding paragraph, the error, failure, negligence, act or omission of any other person, system, institution or payment infrastructure

    本行其聯系人士其各董事高級人員或雇員均毋須向客戶因以下理由而使客戶蒙受或產生之任何開支損失或虧損責: i本行其聯系人士其董事高級人員雇員或代理人根據此等條件採取或遺漏採取有關之行動,但由於本行其聯系人士其董事高級人員雇員或代理人之欺詐行為故意失責或疏忽所造成者除外ii本行本真誠地未能依約替客戶執行止付指示iii向本行提交任何遠期支票或其他付款指示iv本行未能兌現由客戶開出之匯票,但本行將立即透過常渠道將該匯票退回客戶,並解釋拒付之理由v無論如何導致之任何證券之損失損毀毀壞或錯誤交付除非上述各項乃因本行或其聯系人士或其任何董事高級人員或雇員之疏忽或盜竊所引致,而在該等情況下,本行的責任將只限於在發現損失當日該等證券之市值,以及即使本行已獲知該等賠償之可能性vi因客戶之疏忽故意失責或欺詐行為而導致的任何偽造授權簽名或不獲授權使用該簽名vii在第5 . 5 a條之規限下,與本行無關者之任何行動或遺漏或無償債能力包括但不限於第三者代名人或寄存處viii代收或存入或貸存於保管人賬戶的無效偽造或假冒證券或在保管人賬戶記入可能與此有關之賬項ix任何電子機械或系統失靈或因該等機件或系統產生的資料傳送錯誤或任何通訊設施之終斷不常操作情況勞工問題天災或非本行所能合理之任何類似或非類似原因及x盡管有第ix項,任何其他人系統機構或付款設施的錯誤故障疏忽行動或遺漏。
  11. The centers for disease control and prevention director julie gerberding told the subcommittee that her agency is among those helping other countries that need it develop a public health system able to detect bird flu

    美國疾病與預防中心責人朱利.澤伯叮對委員會說許多國家需要建立公眾健康體系來檢測禽流感,她設立的站點在幫助他們進行這項工作。
  12. The results indicated : ( 1 ) the significant gender and grade differences of college students " cdmse were demonstrated, but there were no significant differences in specialty. ( 2 ) generally, with the development of grades, college students " cdmse scores showed a high - low - high developmental trend. ( 3 ) a significant negative correlation between cdmse scores and trait anxiety at the. 01 level was reported, as well as between cdmse scores and internal - external locus of control

    研究結果表明: ( 1 )大學生在擇業效能感上存在顯著的性別和年級差異,並不存在專業差異; ( 2 )就總體而言,隨著年級的升高,大學生的擇業效能感呈現出高-低-高的發展趨勢; ( 3 )大學生的擇業效能感與特質焦慮和內-外心理源之間都存在極其顯著的相關,特質焦慮和內-外心理源之間則存在極其顯著的相關。
  13. Slave computer knows master computer with some trouble when the communication assumption between master computer and slave computer has changed. then control circuit will be automatically switched to slave computer, slave computer will take place of the task of master computer and inform some related person to deal with the trouble in order to resume the normal work. man - machine conversation windows of the control system adopted visual basic 6. 0 to design

    上、下位機之間的通訊採用串列通訊的方式,上位機常情況下責實時運行,當上位機遇到故障時,上、下位機之間的通訊約定會發生變化,這樣下位機就會知道上位機有故障,運行電路切換到下位機系統運行,下位機通過撥號系統通知有關人員,及時處理故障,以使上位機盡快恢復運行。
  14. A compound controller which combines positive feedback and negative feedback gives an excellent advantage of disturbance rejection

    運用反饋和反饋相結合的復合器,可以有效抑擾動。
  15. What i want to stress in this paper is how to control the effect of the scientific globalization - - restrain the side effects, develop the advantages, under this global trend, by the proper policy selecting

    我國如何在科技全球化的趨勢下以確的政策選擇來全球化的影響力,抑面效應,張揚面效應,是本文著重探討的問題。
  16. Abstract : the air / fuel ratio control scheme in common use of boiler auto - burning system is introduced summary. two kinds of scheme improved to obtain the best air / fuel ratio and to raise dynamic characteristic are analyzed in particular. further how to correct measures on air / fuel ratio when changing boiler load and fuel composition is proposed and analyzed

    文摘:對鍋爐自動燃燒系統中空氣/燃料比的常用方案進行了簡要介紹,著重分析了兩種為獲取最佳空氣/燃料比和提高系統動態特性而採取的改進方案,並針對鍋爐荷變化和燃料特性改變對燃燒狀況的影響,進一步對空氣/燃料比的修措施進行了分析與探討,提出了綜合修方案。
  17. Basic properties of the living body ; internal environment and homeostasis ; physiological function regulations ; positive feedback and negative feedback ; methods used for physiological studies

    生命現象的基本生理特徵;機體的內環境和穩態;生理功能的調節和反饋;生理學的研究方法。
  18. Many experiments on the effects with the change of several parameters, such as initial charging current, amplitude and frequency of positive pulses, variety of the amplitude of positive pulses among each charging stages, amplitude and duration of negative pulses, duration between positive and negative pulses, have been performed. the results of analysis and comparison of experimental data verify the validity and feasibility of the fast - charging method. on this basis, a new type of control strategy is advanced

    就充電過程中的起始充電電流、脈沖的幅值、脈沖的頻率、各充電級之間脈沖幅值的變化幅度、脈沖的幅值、脈沖的持續時間、脈沖之間的停歇時間等幾個參數進行了大量的實驗,對實驗數據進行分析和比較,驗證了快速充電方法的有效性和可行性,在此基礎上提出了一種新型快速充電策略。
  19. This product acquires engine crank corresponding phase signal and rotating speed signal, which after ecu treatment, are used together with signals collected from other load sensor ( such as shutter location sensor ) to achieve electronic control over engine ignition timing. compared with mechanical ignition timing control, this is more precise and reliable, resulting in optimized performance of engine in oil consumption, exhaust, output and torque

    Fdw465b型電噴分電器總成採集發動機曲軸相位信號及轉速信號,同其它荷傳感器(如節氣門傳感器等)採集到的信號,經電單元ecu計算處理后,實現對發動機點火時的電子,較之機械式點火更加精確、可靠,使汽車發動機系統的綜合性能得到較大提高,特別是發動機的燃油消耗率、排放、輸出功率、扭矩等方面都得到較大優化。
  20. This paper analyses the type, function and characteristics of usual proportional control valves and raises a new modificative version in the light of their drawback. that is, basing on the principle of flow amplification and electrical feedback and throughout calculation and analysis on flow closed loop control and pressure flow combination., determination of the minimum controlled pressure difference as well as flow controlling range and structure of main valve and research of the dynamic and static characteristic, the paper puts forward control principle of " flow - load pressure change - displacement revision " and pressure / flow double closed loop, and further expounds that using a proportional controller and a electric mechanical transducer can separately serve the control function of pressure or flow as well as flow pressure combination

    本論文分析了目前常用比例閥的類型、功能、特性,並針對其不足提出新的改進方案,即:以流量放大,電反饋兩個原理為基礎,通過對流量閉環及壓力流量復合的計算分析、確定上最小壓差及流量范圍,確定主閥結構、功能特性研究等,提出了「流量? ?載壓力變化? ?位移修」的原理和壓力流量雙閉環原理,並進一步論述了利用一個比例器和一個「電?機械轉換器」就可完成獨立的壓力或流量功能以及流量壓力復合功能。
分享友人